Asian upside-down catfish
Mystus leucophasis
Also known as Burmese upside-down catfish, Asian upside-down bagrid
Care at a glance
- Temperature
- 72–79°F (22–26°C)
- pH
- 6.5–7.5
- Adult size
- 11.8 in (30 cm)
- Minimum tank
- 50 gal (190 L)
- Temperament
- Mostly peaceful
- Social behavior
- Solitary
- Swim level
- Bottom
- Difficulty
- Medium
- Breeding
- No record
- Rarity
- Rare
- Origin
- Native to the Sittang and other river systems of Myanmar.
- Family
- Bagridae
Overview
The Asian upside-down catfish is a striking oddball, but it is a predator that will eat small tankmates, so pair it only with fish too big to swallow. It can be territorial and is usually kept singly, spending the day tucked under wood and hanging inverted. Feed frozen and live meaty foods, earthworms, and sinking pellets after dark. Give it a tank of at least 190 liters with heavy wood cover.
In the wild
This bagrid comes from the rivers of Myanmar, where it shelters in wood, roots, and shady overhangs and comes out to hunt at night. It has the unusual habit of resting and swimming inverted, often hanging belly-up beneath driftwood. Give it a dim tank with plenty of wood and cave cover, gentle to moderate flow, and soft to neutral water at 22 to 26 degrees C.
Good to know
Mystus leucophasis reaches about 30 cm and is one of the few Asian catfish, rather than the African Synodontis, that habitually swims upside down. It is a predatory bagrid with a large mouth and long barbels. Breeding is not recorded in aquariums.
Did you know
It looks a lot like an African Synodontis and shares their belly-up habit, but it is actually an Asian bagrid from Myanmar that happened to evolve the same upside-down trick.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Keeping Asian upside-down catfish?
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Related species

Striped mystus
Mystus vittatus8.3 in (21 cm)60 gal (227 L)72–82°F (22–28°C)Two-spot catfish
Mystus bimaculatus4.7 in (12 cm)30 gal (114 L)72–81°F (22–27°C)Black lancer catfish
Bagrichthys macracanthus9.1 in (23 cm)55 gal (210 L)75–82°F (24–28°C)Harlequin lancer catfish
Bagroides melapterus11.8 in (30 cm)120 gal (455 L)75–81°F (24–27°C)Asian bumblebee catfish
Pseudomystus siamensis5.9 in (15 cm)30 gal (115 L)68–79°F (20–26°C)Redtail bagrid
Hemibagrus nemurus25.6 in (65 cm)185 gal (700 L)72–81°F (22–27°C)